CA2074124A1 - Transmitter with nonlinearity correction circuits - Google Patents

Transmitter with nonlinearity correction circuits

Info

Publication number
CA2074124A1
CA2074124A1 CA2074124A CA2074124A CA2074124A1 CA 2074124 A1 CA2074124 A1 CA 2074124A1 CA 2074124 A CA2074124 A CA 2074124A CA 2074124 A CA2074124 A CA 2074124A CA 2074124 A1 CA2074124 A1 CA 2074124A1
Authority
CA
Canada
Prior art keywords
signal
envelope
error
transmission
detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2074124A
Other languages
French (fr)
Other versions
CA2074124C (en
Inventor
Takayuki Matsumoto
Hiroaki Kosugi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2074124A1 publication Critical patent/CA2074124A1/en
Application granted granted Critical
Publication of CA2074124C publication Critical patent/CA2074124C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H03G3/3047—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers for intermittent signals, e.g. burst signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/08—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements
    • H03D1/10—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements of diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

In a feedback loop, a modulation carrier signal is amplified or attenuated by a variable gain amplifier (2). A part of a transmission signal amplified by a power amplifier (3) is extracted by a monitor circuit (4), and is detected by an envelope detector (6). This transmission envelope signal and a distortion-free standard envelope signal produced from a standard envelope generator (7) are compared in an error detector (8). An error signal obtained by amplifying the error of the two signals and a DC voltage are added in an adder (9).
A gain control terminal (11) of the variable gain amplifier (2) is controlled by using this adder output signal as the control signal. The envelope detector (6) is capable of varying the attenuation quantity of the variable high frequency attenuator (61) and the load resistance value of the variable load circuit (63). Therefore, the dynamic range of the transmission monitor circuit monitor output corresponding to the output voltage of the envelope detector in a predetermined range can be expanded.
CA002074124A 1991-07-19 1992-07-17 Transmitter with nonlinearity correction circuits Expired - Fee Related CA2074124C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP03-179486/1991 1991-07-19
JP3179486A JP2776071B2 (en) 1991-07-19 1991-07-19 Transmission output envelope detection circuit and linear transmission circuit

Publications (2)

Publication Number Publication Date
CA2074124A1 true CA2074124A1 (en) 1993-01-20
CA2074124C CA2074124C (en) 2000-09-26

Family

ID=16066673

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002074124A Expired - Fee Related CA2074124C (en) 1991-07-19 1992-07-17 Transmitter with nonlinearity correction circuits

Country Status (5)

Country Link
US (1) US5319804A (en)
EP (1) EP0524008B1 (en)
JP (1) JP2776071B2 (en)
CA (1) CA2074124C (en)
DE (1) DE69216931T2 (en)

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DE4324895A1 (en) * 1993-07-24 1995-01-26 Philips Patentverwaltung Transmission system for time division multiplex signal transmission
CA2135816C (en) * 1993-11-19 2000-02-15 Takashi Enoki Transmission circuit with improved gain control loop
DE19506051C2 (en) * 1995-02-22 1999-07-29 Mikom Gmbh Circuit arrangement for reducing the amplitude of intermodulation products
US5673001A (en) * 1995-06-07 1997-09-30 Motorola, Inc. Method and apparatus for amplifying a signal
US5995541A (en) * 1995-10-13 1999-11-30 Philips Electronics North America Corporation Method and apparatus for self-calibration and testing of ZPSK transmitter/receiver IC's
US5710521A (en) * 1995-12-29 1998-01-20 Qualcomm Incorporated Out-of-band compensation for non-linear device
JPH09199948A (en) * 1996-01-12 1997-07-31 Fujitsu Ltd Non-linear compensation circuit
JPH09205333A (en) * 1996-01-24 1997-08-05 Sony Corp Power amplifier circuit
GB2316560A (en) * 1996-08-14 1998-02-25 Motorola Ltd Improving the linearity of a transmitter amplifier using a pilot tone and feedback
US6091942A (en) * 1996-12-02 2000-07-18 Motorola, Inc. Self gain aligning circuit and method
JPH11177444A (en) * 1997-12-15 1999-07-02 Matsushita Electric Ind Co Ltd Transmission power control apparatus and method
JP3570898B2 (en) * 1998-08-24 2004-09-29 日本電気株式会社 Pre-distortion circuit
US20020102483A1 (en) 1998-09-15 2002-08-01 Timothy Adams Antireflective coating compositions
DE19911437A1 (en) * 1999-03-04 2000-09-07 Deutsche Telekom Ag Method and arrangement for digital transmission with amplitude-modulated transmitters with a modulation transformer
US6717980B1 (en) * 1999-05-24 2004-04-06 Koninklijke Philips Electronics N.V. Reduction of transmitter induced cross modulation in a receiver
DE10029271C2 (en) * 2000-06-14 2002-04-11 Infineon Technologies Ag Demodulation circuit and demodulation method
US6670849B1 (en) * 2000-08-30 2003-12-30 Skyworks Solutions, Inc. System for closed loop power control using a linear or a non-linear power amplifier
DE10100151A1 (en) * 2001-01-03 2002-07-04 Siemens Ag Method and circuit for regulating the output power of a high-frequency amplifier for generating a high-frequency signal with a variable envelope
US6677823B2 (en) 2001-02-28 2004-01-13 Andrew Corporation Gain compensation circuit using a variable offset voltage
US6759902B2 (en) * 2002-03-25 2004-07-06 Andrew Corporation Single-detector automatic gain control circuit
DE602004010237T2 (en) * 2003-02-14 2008-10-02 Analog Devices Inc., Norwood SYSTEM AND METHOD FOR REDUCING THE TRANSMISSION FUNCTIONAL WAVE IN A LOGORITHMIC RMS-TO-DC CONVERTER
US7991367B2 (en) 2004-12-23 2011-08-02 Freescale Semiconductor, Inc. Wireless communication unit and power control system thereof
WO2006066628A1 (en) * 2004-12-23 2006-06-29 Freescale Semiconductor, Inc Power control system for a wireless communication unit
US8019292B2 (en) * 2007-07-11 2011-09-13 Axiom Microdevices, Inc. Power amplifier amplitude modulator system and method
JP5744712B2 (en) * 2011-12-15 2015-07-08 サムソン エレクトロ−メカニックス カンパニーリミテッド． Power detection circuit
CN110832772B (en) * 2017-07-11 2024-01-02 三菱电机株式会社 Output power control device

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486128A (en) * 1968-02-07 1969-12-23 Us Army Power amplifier for amplitude modulated transmitter
FR2532491A1 (en) * 1982-08-24 1984-03-02 Thomson Csf Linearising device for high-frequency amplifier.
US4560949A (en) * 1982-09-27 1985-12-24 Rockwell International Corporation High speed AGC circuit
DE3505949A1 (en) * 1985-02-21 1986-08-21 ANT Nachrichtentechnik GmbH, 7150 Backnang Radio-frequency amplifier control circuit and application
JPS61210728A (en) * 1985-03-14 1986-09-18 Alps Electric Co Ltd Output power control device for transmitter
JPH0630031B2 (en) * 1986-09-25 1994-04-20 日本電気株式会社 Automatic power control circuit
US4760347A (en) * 1987-01-20 1988-07-26 Novatel Communications Ltd. Controlled-output amplifier and power detector therefor
JPH01212925A (en) * 1988-02-20 1989-08-25 Fujitsu General Ltd Automatic power control circuit for broad band radio transmitter
GB8826918D0 (en) * 1988-11-17 1988-12-21 Motorola Inc Power amplifier for radio frequency signal
US5023937A (en) * 1989-05-09 1991-06-11 Motorola, Inc. Transmitter with improved linear amplifier control
JP2743492B2 (en) * 1989-07-05 1998-04-22 松下電器産業株式会社 Transmission output power control device
US4933986A (en) * 1989-08-25 1990-06-12 Motorola, Inc. Gain/phase compensation for linear amplifier feedback loop
FI85202C (en) * 1990-03-09 1992-03-10 Nokia Mobile Phones Ltd FOERFARANDE FOER FOERBAETTRANDE AV PRECISION I EFFEKTREGLERING I EN RADIOTELEFON.
US5126688A (en) * 1990-03-20 1992-06-30 Oki Electric Co., Ltd. Power amplifying apparatus for wireless transmitter
US5214393A (en) * 1990-08-20 1993-05-25 Matsushita Electric Industrial Co., Ltd. Transmission output control circuit
KR960000775B1 (en) * 1990-10-19 1996-01-12 닛본덴기 가부시끼가이샤 Output level control circuit of high frequency power amplifier
JP2871889B2 (en) * 1991-04-16 1999-03-17 三菱電機株式会社 High frequency power amplifier

Also Published As

Publication number Publication date
DE69216931T2 (en) 1997-08-07
EP0524008B1 (en) 1997-01-22
JPH0529967A (en) 1993-02-05
JP2776071B2 (en) 1998-07-16
US5319804A (en) 1994-06-07
CA2074124C (en) 2000-09-26
EP0524008A1 (en) 1993-01-20
DE69216931D1 (en) 1997-03-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed